Enhancement of Coherence Length and Nonlinear Current-Voltage (IV) Characteristics of Ag-Doped GBCO

被引：3

作者：

Biswas, B. ^{[1
]}

Ghosh, Ajay Kumar ^{[1
]}

机构：

[1] Jadavpur Univ, Dept Phys, Kolkata 700032, India

来源：

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2020年 / 33卷 / 09期

关键词：

Superconductors; Transport properties; Coherence length; Aslamazov-Larkin equation and Kosterlitz-Thouless transition; FLUCTUATION CONDUCTIVITY; THERMODYNAMIC FLUCTUATIONS; SUPERCONDUCTORS; MAGNETOCONDUCTIVITY;

D O I：

10.1007/s10948-020-05525-y

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The resistivity as a function of temperature of GdBa2Cu3-xAgxO7-delta superconductors reveals that the critical temperature, T-c, increases with the concentration of Ag (x). An equation has been suggested to understand the behaviour of T-c (x). The coherence length has been extracted on the basis of the three dimensional Aslamazov-Larkin (3DAL) equation to understand the enhancement in the critical temperature. We have studied current-voltage (IV) curves below T-c to understand the nonlinearity observed in doped samples. An exponent has been extracted to explore the possibility of Kosterlitz-Thouless (KT) transition and the role of the coherence length in the nonlinear behaviour.

引用

页码：2629 / 2635

页数：7

共 44 条

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